Yen Firms Toward 156.10 as Tokyo Discloses ¥15.4T Summer Intervention and BoJ Eyes a December Hike to 1.50%

USD/JPY traded at 157.884 at 20:52 GMT on Monday, November 9, down 0.541, or 0.34%, from the week’s opening level of 158.425. The pair touched 158.531 early in the Asian session before sellers took over. It fell to 157.663 in New York trade and spent the afternoon just above that low. Each attempt to retake 158 in the afternoon failed. A drop of more than half a yen on a day when US stocks rallied shows that the yen’s own news, not the dollar, drove the move.

The trigger came from Tokyo. On Monday, Japan’s Ministry of Finance released its daily intervention data for July to September. The data showed that authorities bought yen on three days over the summer, not the two the market had assumed. On July 30, Tokyo spent ¥7.98 trillion, the largest single-day yen purchase since records began in 1991. It added ¥5.55 trillion on July 31 and ¥1.87 trillion on August 3. The three-day total of ¥15.4 trillion, about $97 billion, is the largest yen-buying campaign Japan has ever run.

The disclosure reminded traders how far Tokyo has already gone to stop the yen’s slide. On July 29, USD/JPY closed at 163.864, near the yen’s weakest level in 40 years. The 52-week high of 163.979 came on July 23. Intervention knocked the pair from an intraday high of 163.733 on July 30 to a low of 157.994 the same day, a 5.7-yen drop in a single session. By August 3, it had reached 155.256. Traders who had pushed the pair toward 164 learned what Japan’s reserves can do.

The pair now trades in the zone where that lesson is most relevant. Since September 24, USD/JPY has stayed between 156.10 and 159.00, with most of the action between 157.40 and 158.60. The ceiling at 159 has held for six weeks. The market knows Tokyo stepped in at 160.70 on April 30 and above 163 in July. With the pair within about 2 yen of 160, every rally runs into the memory of those operations.

Two forces now shape the outlook. Japan’s monetary policy is tightening, with the Bank of Japan holding at 1.25% after a September hike and signalling another move in December. Against that, US rates remain far higher, with the Fed’s range at 3.75%–4.00% and a December hike priced at about 80%. Tuesday’s US CPI release and the December central bank meetings will decide which force wins.

The Intervention Data: ¥7.98 Trillion in One Day and the First Joint Action Since 1998

The details in Monday’s release explain why the market reacted. Japan’s intervention data showed that authorities bought ¥7.9756 trillion on July 30. That beat the previous one-day record of ¥6.2787 trillion, set on April 30 of this year. On July 31, they bought another ¥5.5523 trillion. On August 3, they bought ¥1.8714 trillion. The total was ¥15.3993 trillion, the largest monthly yen-buying total on record.

The July 31 operation stands out for another reason. That day, the US and Japan jointly entered the currency market to support the yen, their first coordinated operation since 1998. The US sold euros for yen. Joint action carries far more weight than a solo Japanese move, because it shows Washington supports a stronger yen. That changes the risk for traders betting against the yen. They are no longer facing only Japan’s reserves, but the political backing of the US Treasury.

The third day was the surprise. Traders had assumed intervention ended on July 31, after the joint operation. The August 3 purchase of ¥1.87 trillion shows that Tokyo kept selling dollars as the pair recovered from its first drop. That matters because it reveals Tokyo’s willingness to defend gains, not just stop the initial slide. On August 3, USD/JPY fell to 155.256 intraday, its lowest level since early May.

The scale of 2026’s interventions is unmatched. Japan bought ¥6.28 trillion on April 30 alone when the pair hit 160.70. It followed with the ¥15.4 trillion summer campaign. That brings this year’s known yen purchases above ¥21 trillion, and the full spring total is likely larger, since the April 30 figure covers one day. Japan funds these operations from its foreign currency reserves, which remain large enough to sustain further action.

The release came with a clear message. Japan has said it remains ready to take bold action if needed and has left the door open to further intervention. For traders, the data confirm what the price action already suggested. Tokyo is willing to spend heavily and to move more than once, and it can act jointly with the US. That combination makes it very expensive to be wrong on a bet that the pair will break above 160. The disclosure itself pushed the pair down half a yen, because it raised the perceived risk of the next operation.

Why the 158–160 Zone Became the Market’s Red Line

The price history of 2026 explains why 158 to 160 has become the zone the market treats with caution. USD/JPY spent most of March to June between 157 and 162. It first crossed 160 in late March, closing at 160.234 on March 30. It traded near 160 again in late April, closing at 160.184 on April 30 before Tokyo bought ¥6.28 trillion that day. The pair fell to an intraday low of 155.551 within hours. Its close on May 1 was 156.978.

The yen’s weakness resumed through May and June. The pair climbed back above 160 by June 15 and reached 162.84 on July 1. It traded above 162 for most of July and hit 163.979 on July 23. At that point, the yen had lost more than 7% against the dollar since the start of February, when the pair traded near 153. Tokyo waited until the move looked disorderly before acting. The summer campaign began on July 30, when the pair was near 164.

The intervention reset the market. After the July and August operations, USD/JPY fell steadily, reaching an intraday low of 152.897 on September 8. That was its lowest level since February. The pair then rebounded as US rates rose, climbing back to 158.996 on September 24. Since then, it has traded in a tight range. The 52-week low of 152.278, set on February 12, remains the bottom of the 12-month band.

The pattern shows a clear behaviour. Traders push the pair toward 160 when US rates support the dollar. Tokyo signals concern as the pair approaches that level, and it intervenes if the move accelerates past it. Each intervention knocks the pair back 5 yen or more. The market has learned to sell rallies near 159 rather than wait for Tokyo. That explains why the pair has failed to close above 159 since September 25.

The current price of 157.884 sits 2.116 yen, or 1.34%, below 160. That is close enough that Tokyo is watching, but far enough that action is unlikely without a sharp move. The 52-week high of 163.979 is 3.86% above. The 52-week low of 152.278 is 3.55% below. In year-to-date terms, the pair is up 0.94% from its 2025 close of 156.413, and up 2.64% from 153.817 a year ago. For all the volatility, the yen has barely moved over 12 months. The interventions have absorbed every attempt at a trend.

The Bank of Japan Holds at 1.25% but Declares Its 2% Goal Met

The Bank of Japan’s policy path supports the yen. The BoJ raised its policy rate to 0.75% in December 2025, to 1.00% on June 16 and to 1.25% on September 18. At its October 30 meeting, it held at 1.25%, as expected. The language changed in a way the market saw as hawkish. The BoJ said underlying inflation is now at a level generally consistent with its 2% price stability target and expected to remain there.

That shift matters. In its July outlook, the BoJ said underlying inflation was approaching 2%. In October, it said the target had been reached. A central bank that has met its inflation target has no reason to keep policy loose. The BoJ said it will continue raising the policy rate and adjusting the degree of monetary accommodation, given that financial conditions remain accommodative. It also forecast core inflation at 2.6% for fiscal 2027.

Governor Kazuo Ueda followed the statement with clear signals at his press conference. He pointed to strong prospects for a rate hike in December. That came hours after the BoJ declared its inflation goal met. Before the meeting, a survey of economists found 83% expected a December hike, up from 35% a month earlier, and none expected a move in October. After the meeting, market pricing for December stayed high. Some forecasts now point to a terminal rate of 2% in 2027.

A BoJ that keeps hiking narrows the rate gap that has driven yen weakness for four years. At 1.25%, the policy rate is the highest since 1995. Each 25-basis-point move raises the yield Japanese investors earn at home, making it less attractive to send money abroad. It also raises the cost of borrowing yen to fund carry trades. Over time, that should reduce the flows that push USD/JPY higher.

The pace of the cycle limits the effect. The BoJ has raised rates by 50 basis points in 2026, while US rates have risen too. Japanese real rates remain negative. With core inflation at 2.1% and the policy rate at 1.25%, the real policy rate stands at about -0.85%. Until Japanese rates are positive in real terms, the yen will struggle to attract large inflows. December’s expected hike would bring the policy rate to 1.50%, still below core inflation.

Takata’s 1.5% Dissent and the December 18 Decision

The October vote shows how much pressure there is inside the BoJ to move faster. The board held at 1.25% by an 8–1 vote. Board member Hajime Takata dissented in favour of raising the rate to 1.5%. Takata has been the most hawkish member through 2026. He also dissented in January in favour of a hike to 1.00% and in March in favour of a move to 1.00%. His dissents have consistently signalled the board’s next step.

The dovish side of the board has its own weight. In September, when the BoJ raised rates to 1.25%, board members Toichiro Asada and Ayano Sato preferred to hold at 1.00%. Asada argued that underlying inflation was still below 2% and questioned whether the economy could absorb another increase. Both were nominated by Prime Minister Sanae Takaichi and lean toward supporting growth. Their presence on the board makes each hike harder to deliver. Even so, the board raised rates in September and signalled more in October.

The minutes of the September meeting, released on November 5, reinforced expectations of further tightening. The yen strengthened past 158 per dollar on the day the minutes came out, its second straight day of gains. That reaction shows how closely the market follows the BoJ’s internal debate. Any sign that the hawks are gaining ground supports the yen. Any sign that the doves are blocking hikes weakens it.

The December 18 meeting is now the key date for the yen. A hike to 1.50% is the expected outcome, and the market has largely priced it. The question is what comes next. If the BoJ signals that it plans to keep hiking into 2027, toward a terminal rate near 2%, the yen will gain. If it frames December as a pause point, the pair could move back toward 159. Ueda’s press conference will matter as much as the decision itself.

Political pressure adds another layer. Takaichi’s government favours expansionary fiscal policy, including a two-year suspension of the 8% consumption tax on food. Large spending plans raise questions about debt and add pressure on the yen. At the same time, the government wants a stronger yen to curb import costs. Tokyo has chosen intervention as its main tool for the currency, while leaving rates to the BoJ. That division of roles has held through 2026, and it means the BoJ can move at its own pace.

Japan’s Inflation: 2.1% Core Nationally, 2.6% in Tokyo

Japan’s inflation data back the BoJ’s case. National core CPI, which excludes fresh food, rose 2.1% in September from 1.7% in August. That was the highest reading in 2026. Headline CPI also rose 2.1%, up from 1.9%. Core-core inflation, which excludes both fresh food and energy, climbed to 2.4% from 1.9%. A half-point jump in core-core inflation in a single month signals price pressure spreading beyond energy.

Tokyo’s data give an early read on October. The Tokyo-area headline CPI rose to 2.8% in October from 2.7% in September. Core CPI, excluding fresh food, eased slightly to 2.6% from 2.7%. Core-core CPI slowed to 2.6% from 2.9%. Goods inflation in Tokyo accelerated to 3.5% from 3.2%, while services eased to 2.2% from 2.3%. Accommodation prices jumped 6.7%, a sign of strong tourism demand.

Two forces drive Japanese inflation in 2026. Energy prices rose sharply after the Iran conflict began in March, raising import costs. The weak yen amplified that rise, because Japan pays for oil and gas in dollars. When USD/JPY traded near 163 in July, every barrel of oil cost Japanese buyers about 7% more than in February. That pass-through into consumer prices shows up in the goods data and in the BoJ’s statement that underlying inflation has reached 2%.

The relationship between the yen and inflation now runs in a loop. A weak yen raises import prices and inflation. Higher inflation forces the BoJ to hike. Higher rates support the yen. That loop gives the BoJ a reason to keep tightening, and it gives Tokyo a reason to intervene when the yen falls too fast. Both policies point the same way: toward a stronger yen, or at least a yen that does not keep weakening.

The next major data point is national CPI for October, due later in November. If core inflation holds at or above 2.1%, the December hike will look certain. If it eases toward 1.8%, the doves on the board will push for a pause. Japan’s spring wage negotiations, which set pay increases for 2027, are another key input. Strong wage growth would support the BoJ’s view that inflation will stay near 2% and justify a terminal rate near 2%.

JGB Yields Retreat to 2.785% From Above 3.1%

The Japanese government bond market tells a more nuanced story. The 10-year JGB yield closed at 2.785% on November 5. That was down 3.6 basis points that day and 6.1 basis points on the week. It is up 71.9 basis points so far in 2026, a large rise for a market that spent most of the previous decade near zero. In early October, the 10-year yield traded above 3.1%, reaching 3.109% on October 6. The 30-basis-point retreat since then has removed some of the yen’s support.

The November 5 auction of 10-year JGBs showed solid demand. According to the Ministry of Finance, the auction drew ¥6.3355 trillion in competitive bids for ¥1.9719 trillion accepted, a bid-to-cover ratio of about 3.2. The average accepted yield was 2.768%, with the lowest accepted price yielding 2.800%. The bonds carry a 3.1% coupon. Strong demand at yields near 2.8% shows domestic investors are willing to buy Japanese debt at these levels.

The decline in JGB yields reflects global factors. Bonds rallied worldwide in early November as tech stocks sold off and oil prices fell. The US 10-year Treasury yield traded at 4.860% on Monday, near its lowest level in two months. When yields fall globally, the yen loses some of the yield advantage it gained when JGB yields jumped in September and October. That explains part of why USD/JPY has held near 158 despite the BoJ’s hawkish tone.

The gap between US and Japanese 10-year yields stands at about 207 basis points. That is far narrower than in 2023 and 2024, when it often exceeded 350 basis points. The narrower spread reflects both the BoJ’s rate hikes and rising JGB yields as the bank shrinks its bond purchases. A 207-basis-point gap still favours the dollar, and Japanese investors still earn more abroad. However, the incentive to sell yen for dollars is weaker than at any point in the past three years.

JGB yields will be a key signal into December. If the 10-year yield climbs back toward 3% on expectations of a BoJ hike, the yen will strengthen. If it keeps falling toward 2.5% as global bonds rally, the yen will lose support even if the BoJ hikes. The long end of the JGB curve also reflects fiscal risk under Takaichi’s spending plans. A sharp rise in super-long yields driven by debt concerns would be negative for the yen rather than positive.

A 275-Basis-Point Policy Gap That a December Double Hike Would Not Close

The core driver of USD/JPY remains the gap between US and Japanese policy rates. The Fed’s target range stands at 3.75% to 4.00%. The BoJ’s policy rate stands at 1.25%. At the top of the Fed range, the gap is 275 basis points. That gap pays traders who borrow yen and invest in dollars, and it has driven the carry trade that kept the yen weak for most of the past four years.

December may bring hikes from both central banks. Futures pricing assigns about 80% probability to a Fed hike to 4.00%–4.25%. Economists see a similar probability of a BoJ move to 1.50%. If both happen, the gap stays at 275 basis points. That is the core problem for yen bulls. The BoJ can hike, but if the Fed hikes too, the policy gap does not narrow.

The carry math remains attractive. A trader who borrows yen at about 1.25% and buys US Treasury bills at about 4% earns about 2.75% a year before hedging costs. On a 157.884 exchange rate, that annual carry is worth about 4.3 yen per dollar. The yen would need to strengthen by more than 4.3 yen in a year to wipe out that return. That is why traders keep selling yen despite the risk of intervention. The carry pays them to wait.

Intervention risk changes that math in the short term. A single intervention day can move the pair 5 to 6 yen, more than a year’s carry. Traders who held long USD/JPY positions on July 30 lost more than a year of carry income in one session. That risk is why the pair has stalled below 159 since September. Carry traders are still in the market, but they are less willing to push the pair higher near 160.

The gap will narrow only if the BoJ keeps hiking while the Fed pauses or cuts. That scenario becomes more likely in 2027, if US inflation cools and the Fed ends its hiking cycle. The BoJ’s projected terminal rate near 2% would bring the gap below 200 basis points if the Fed holds at 4.25%. For now, the gap stays wide and the yen stays weak. The structural trend in USD/JPY depends on the Fed as much as the BoJ.

The Fed’s December Hike and Tuesday’s US CPI

The dollar side of the pair turns on Tuesday’s US consumer price index for October. The Fed’s December hike odds sit at about 80%. A hot CPI reading would push those odds above 90% and lift US yields. That would support the dollar and push USD/JPY back toward 158.50 to 159. A soft reading would cut the odds toward 60% and pull Treasury yields lower. That would take the pair toward 157 and the support zone near 156.

The US economy has given the Fed room to tighten. The October jobs report showed 165,000 new jobs, a steady pace of hiring. US equity markets rallied strongly on Monday, with the S&P 500 up 2.59%. Risk appetite is high, and the economy is absorbing higher rates without stress. That backdrop supports further Fed tightening. It also supports the dollar against low-yielding currencies such as the yen.

The US midterm elections on November 3 added a political dimension. Democrats won majorities in both the House and Senate, and USD/JPY briefly dropped below 157.50 as the results came in. The pair then rebounded to about 158.50 after President Trump accepted the result and signalled willingness to work with Democrats. Divided government reduces the chance of large new fiscal programs in the US. That could ease long-term inflation expectations and limit how far the Fed needs to hike.

Treasury yields are near their lowest in two months. The 10-year yield traded at 4.860% on Monday after reaching 4.950% on November 3. A softer path for US yields has helped keep USD/JPY from breaking higher, even as the Fed signals a December hike. If Tuesday’s CPI comes in soft and yields fall below 4.80%, the dollar would lose its main support against the yen. The pair would likely fall toward 156.50.

The timing of the two December meetings creates a window of risk. The Fed meets before the BoJ’s December 18 decision. If the Fed hikes and signals more to come, the dollar will strengthen into the BoJ meeting. If the BoJ then hikes and signals more, the yen could recover quickly. Traders face two central bank decisions within days of each other, both expected to raise rates. The guidance from each, not the decisions themselves, will set the pair’s direction into year-end.

Safe-Haven Flows: Nvidia, Midterms and the Yen as an AI Hedge

The yen has regained a role it lost during the years of near-zero rates: a haven in risk-off markets. When tech stocks sold off sharply on November 5, led by semiconductors, USD/JPY fell back below 157.50 as investors bought yen. Japanese government bonds also rallied. That pattern was common before 2022, when the yen reliably strengthened during equity sell-offs. It faded while the BoJ kept rates near zero, but it has returned as Japanese rates have risen.

Monday’s market showed the same pattern in a weaker form. Nvidia fell about 4.4% after reports of an investigation involving its chief executive. Bitcoin dropped to its lowest level since August over the weekend, and more than $1 billion of crypto positions were liquidated. US equity markets rallied overall, yet USD/JPY fell 0.34%. Part of that move came from the intervention data. Part came from investors hedging AI exposure with yen.

The yen’s safe-haven appeal rests on Japan’s large overseas investments. Japanese investors hold trillions of dollars in foreign assets. When global markets fall, they tend to bring some of that money home, buying yen. With domestic yields higher than they have been in decades, the incentive to repatriate is stronger than in past years. A sharp correction in US tech stocks could trigger large repatriation flows and push USD/JPY down quickly.

That makes the yen a useful hedge against an AI-driven market shock. If AI stocks fall sharply, US yields would likely drop as investors buy Treasuries. The Fed’s December hike would come into question. Japanese investors would repatriate. All three forces would push USD/JPY lower. In that scenario, the pair could test the September low near 152.90 within weeks. It is a tail risk, but it is the main path to a large yen rally before year-end.

The opposite case is a continued equity rally. If tech stocks recover and risk appetite stays strong, carry trades will continue and the yen will stay weak. Monday’s 2.59% gain in the S&P 500 shows how quickly sentiment can turn positive. In a risk-on market, USD/JPY tends to drift higher, toward 159. The intervention threshold near 160 then becomes the main ceiling.

The Crosses: GBP/JPY Near 212 and AUD/JPY Near 109

The yen crosses show how weak the currency remains against higher-yielding currencies. With GBP/USD at 1.3438 and USD/JPY at 157.884, GBP/JPY trades near 212.17. With AUD/USD at 0.6930, AUD/JPY trades near 109.41. Both crosses are near multi-year highs. Sterling and the Australian dollar offer far higher yields than the yen, and carry traders have bought both heavily.

Monday’s moves show the yen’s gains were broad but uneven. GBP/USD rose 0.62% and AUD/USD climbed 0.90%, both stronger than the dollar. The yen gained 0.34% against the dollar, less than sterling and the Australian dollar did. That means the yen fell against both currencies on Monday despite rising against the dollar. The pattern shows that Monday was mainly a weak-dollar day, with the yen benefiting less than other currencies.

The divergence matters for traders. If the yen were rallying on its own strength, it would gain against all major currencies, including sterling and the Australian dollar. Monday’s pattern shows the yen’s gains came mainly from dollar weakness and the intervention news. Higher-yielding currencies did better. That suggests carry trades in yen crosses remain intact, and the market has not yet moved to a broad yen-buying phase.

The Bank of England’s hike to 4.00% on November 5 widened the gap between UK and Japanese rates to 275 basis points, the same as the US gap. That supports GBP/JPY in the same way the Fed supports USD/JPY. The Reserve Bank of Australia’s policy stance keeps the Australian dollar attractive for carry. Higher-yielding currencies will keep outperforming the yen until the BoJ narrows the gaps further.

The crosses will be the first place to watch for a real yen turn. A sharp drop in GBP/JPY or AUD/JPY would show carry trades unwinding, which would add yen-buying pressure across the board. That happened in August 2024, when a BoJ hike and weak US data triggered a global carry unwind. If the BoJ hikes in December and US data soften, a similar unwind is possible. For now, the crosses point to a market that is still comfortable selling yen against higher-yielding currencies.

Technical Map Above: 158.531, 159 and the 160 Line

The first resistance level for USD/JPY is Monday’s intraday high of 158.531, 0.65 yen above the current price. That level matches the cluster of intraday highs from November 3 to 6, which reached 158.576, 158.649 and 158.540. A move above 158.65 would break that cluster and open the path to 159. Each attempt to break above 158.65 last week failed, which makes it the key near-term ceiling.

Above that sits the 158.942 to 158.996 zone, the highs of October 14 and September 24. The pair has not closed above 159 since September 3, when it closed at 158.923 after falling from 160.196 the day before. A daily close above 159 would be the first since early September and would signal that the six-week range has broken. It would require a hot US CPI print or a dovish shift from the BoJ.

The 160 level is the line the market will not cross easily. Tokyo bought ¥6.28 trillion when the pair traded at 160.70 on April 30. It intervened again after the pair passed 163 in July. Any move toward 160 would bring warnings from Finance Minister Satsuki Katayama and raise the risk of another operation. A break above 160 would put the 52-week high of 163.979 in view, but that path would almost certainly meet intervention along the way.

The upside is limited by the intervention ceiling. From 157.884, the distance to 160 is 2.116 yen, or 1.34%. Traders who buy USD/JPY here risk a 5- to 6-yen drop if Tokyo intervenes. They gain at most 2 yen before reaching the intervention zone. That risk-reward profile has kept buyers cautious since September. It favours selling rallies toward 158.65 to 159 rather than chasing the pair higher.

Momentum indicators reflect the range. The pair has traded between 156.10 and 159.00 for six weeks with no clear trend. Short-term momentum turned lower on Monday after the intervention data. A daily close above 158.65 would turn it back up. Until then, the technical picture favours range trading, with the upper half of the range acting as a sell zone and the lower half as a buy zone.

Technical Map Below: 157.42, 156.10 and the 152.28 Floor

The first support level is 157.42, the intraday lows of November 4 and 6, 0.46 yen below the current price. That level has held twice in the past week. A daily close below 157.42 would break last week’s range and open the path toward 157. Below that sits 156.66, the October 26 low, and then 156.096, the October 23 low, which marks the bottom of the six-week range.

A break below 156.10 would signal the end of the range. The next support would be 155.256, the August 3 low set during intervention. That level marks the point where Tokyo’s third day of buying stopped the rebound. A drop to 155.25 would mean a 2.63-yen, or 1.67%, decline from current levels. It would likely need a soft US CPI print, a hawkish BoJ signal or a risk-off move in equities.

Below 155.25, the September lows come into play. USD/JPY fell to 152.897 on September 8 and 152.985 on September 9, the low point after the summer intervention. The 52-week low of 152.278, set on February 12, sits just below. A test of the 152.28 to 152.90 zone would mean a decline of more than 3% from current levels. It would require a major shift, such as a BoJ commitment to rapid hikes or a sharp fall in US rates.

The downside is more open than the upside. From 157.884, the market can fall 5 yen to the September lows without meeting any policy resistance. Tokyo has no reason to stop a stronger yen. The BoJ welcomes it because it eases import costs. The US Treasury welcomes it because it showed in July that it wants a stronger yen. Nothing stands in the way of a yen rally except the rate gap.

The technical picture is asymmetric. Upside is capped near 160 by intervention risk. Downside is open toward 152 if rates or risk sentiment shift. That asymmetry favours short positions in USD/JPY, as long as the rate gap does not widen further. A daily close below 157.42 would confirm the short-term bearish bias. A close below 156.10 would shift the medium-term trend lower.

Event Risk and the Verdict on USD/JPY

The next six weeks carry heavy event risk. Tuesday’s US CPI for October will set the tone for Fed expectations. Japan’s national CPI for October, due later in November, will test the BoJ’s December case. The Fed’s December decision comes first, with a hike priced at about 80%. The BoJ follows on December 18, with a hike to 1.50% widely expected. Between those dates, every move toward 160 will be met by verbal warnings from Tokyo, backed by ¥15.4 trillion of recent intervention.

The bullish case for USD/JPY rests on the rate gap. The Fed’s top rate of 4.00% sits 275 basis points above the BoJ’s 1.25%. A December hike from both banks would leave that gap unchanged. The carry trade pays about 4.3 yen per dollar a year. The US economy added 165,000 jobs in October and equities are rallying. Japanese real rates remain negative at about -0.85%. JGB yields have fallen from 3.109% to 2.785% since early October, reducing the yen’s yield support.

The bearish case rests on policy and positioning. Tokyo spent a record ¥7.98 trillion in a single day in July and ¥15.4 trillion over three days, including the first joint operation with the US since 1998. The BoJ declared its 2% inflation goal met and signalled a December hike, with Takata already voting for 1.5%. Japanese core inflation rose to 2.1% in September and core-core to 2.4%. The yen is regaining its safe-haven role as AI stocks wobble. The pair has failed to close above 159 for more than two months.

The balance favours a lower USD/JPY over the coming weeks. The upside is capped by intervention near 160, and the downside is open toward 155 and 152 if rates or risk appetite shift. The rate gap slows any decline, but it does not stop it.

The verdict on USD/JPY is bearish from 157.884, with a sell zone at 158.50 to 159.00 and a first target of 156.10. A daily close below 157.42 targets the 156.10 range floor within two weeks. A soft US CPI on Tuesday or a hawkish BoJ signal ahead of December 18 would extend the move toward 155.25, the August 3 intervention low. A daily close above 159.00 cancels the bearish case and opens a run toward 160, where intervention risk becomes acute. Medium-term, a December BoJ hike paired with a Fed pause signal would put the September low near 152.90 in play. Tokyo has shown it will defend 160. Higher Japanese rates are now pushing the yen in the same direction.

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